Can opener



FIG. 1 is a front, top and left side perspective view of a can openershowing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view, the right side elevational viewbeing substantially a mirror image thereof; and

FIG. 6 is a bottom plan view thereof.

The ornamental design for a can opener, as shown and described.